[PATCH v3 0/7] BorrowedPage, IntoPageIter and VmallocPageIter

[Danilo Krummrich <dakr@kernel.org>]

This patch series implements the BorrowedPage type, the IntoPageIter trait and
VmallocPageIter type.

IntoPageIter can be implemented by any type that owns pages to allow users to
borrow them through a generic interface.

For instance, this is useful to access and borrow the backing pages of
allocation primitives, such as Box and Vec, backing a scatterlist.

Hence, implement IntoPageIter for VBox and VVec.

Additionally, implement Vmalloc::to_page() and ArrayLayout::size(), which are
dependencies of the above.

Changes in v3:
  - Generalize the previous PageOwner impl of VBox and VVec in VmallocPageIter.
  - Correspondingly, replace PageOwner with IntoPageIter.

Changes in v2:
  - BorrowedPage
    - Add link to Ownable
    - Use borrow_page() in the example
  - Add PageOwner, Vmalloc::to_page(), ArrayLayout, VBox, VVec patches.

Danilo Krummrich (7):
  rust: page: implement BorrowedPage
  rust: alloc: vmalloc: implement Vmalloc::to_page()
  rust: alloc: implement VmallocPageIter
  rust: page: define trait IntoPageIter
  rust: alloc: kbox: implement IntoPageIter for VBox
  rust: alloc: layout: implement ArrayLayout::size()
  rust: alloc: kvec: implement IntoPageIter for VVec

 rust/bindings/bindings_helper.h |   1 +
 rust/kernel/alloc/allocator.rs  | 141 ++++++++++++++++++++++++++++++++
 rust/kernel/alloc/kbox.rs       |  37 ++++++++-
 rust/kernel/alloc/kvec.rs       |  37 ++++++++-
 rust/kernel/alloc/layout.rs     |   5 ++
 rust/kernel/page.rs             |  85 ++++++++++++++++++-
 6 files changed, 303 insertions(+), 3 deletions(-)


base-commit: d2eedaa3909be9102d648a4a0a50ccf64f96c54f
-- 
2.50.1